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==Crystal Structure of HoxA9 and Pbx1 homeodomains bound to DNA==
==Crystal Structure of HoxA9 and Pbx1 homeodomains bound to DNA==
<StructureSection load='1puf' size='340' side='right' caption='[[1puf]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
<StructureSection load='1puf' size='340' side='right'caption='[[1puf]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1puf]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human] and [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PUF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1PUF FirstGlance]. <br>
<table><tr><td colspan='2'>[[1puf]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PUF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1PUF FirstGlance]. <br>
</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">HOXA9 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice]), PBX1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1puf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1puf OCA], [http://pdbe.org/1puf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1puf RCSB], [http://www.ebi.ac.uk/pdbsum/1puf PDBsum]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1puf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1puf OCA], [https://pdbe.org/1puf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1puf RCSB], [https://www.ebi.ac.uk/pdbsum/1puf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1puf ProSAT]</span></td></tr>
</table>
</table>
== Disease ==
[[http://www.uniprot.org/uniprot/PBX1_HUMAN PBX1_HUMAN]] Note=A chromosomal aberration involving PBX1 is a cause of pre-B-cell acute lymphoblastic leukemia (B-ALL). Translocation t(1;19)(q23;p13.3) with TCF3. TCF3-PBX1 transforms cells by constitutively activating transcription of genes regulated by PBX1 or by other members of the PBX protein family.
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/PBX1_HUMAN PBX1_HUMAN]] Binds the sequence 5'-ATCAATCAA-3'. Acts as a transcriptional activator of PF4 in complex with MEIS1. Converted into a potent transcriptional activator by the (1;19) translocation. May have a role in steroidogenesis and, subsequently, sexual development and differentiation. Isoform PBX1b as part of a PDX1:PBX1b:MEIS2b complex in pancreatic acinar cells is involved in the transcriptional activation of the ELA1 enhancer; the complex binds to the enhancer B element and cooperates with the transcription factor 1 complex (PTF1) bound to the enhancer A element. Probably in complex with MEIS2, is involved in transcriptional regulation by KLF4.<ref>PMID:12609849</ref> <ref>PMID:21746878</ref>  [[http://www.uniprot.org/uniprot/HXA9_MOUSE HXA9_MOUSE]] Sequence-specific transcription factor which is part of a developmental regulatory system that provides cells with specific positional identities on the anterior-posterior axis. Required for induction of E-selectin and VCAM-1, on the endothelial cells surface at sites of inflammation (By similarity).  
[https://www.uniprot.org/uniprot/HXA9_MOUSE HXA9_MOUSE] Sequence-specific transcription factor which is part of a developmental regulatory system that provides cells with specific positional identities on the anterior-posterior axis. Required for induction of E-selectin and VCAM-1, on the endothelial cells surface at sites of inflammation (By similarity).
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/pu/1puf_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/pu/1puf_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
   </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1puf ConSurf].
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<div style="clear:both"></div>
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==See Also==
==See Also==
*[[Hox protein|Hox protein]]
*[[Tomato aspermy virus protein 2b Suppression of RNA Silencing|Tomato aspermy virus protein 2b Suppression of RNA Silencing]]
*[[Tomato aspermy virus protein 2b Suppression of RNA Silencing|Tomato aspermy virus protein 2b Suppression of RNA Silencing]]
*[[User:Wayne Decatur/Tomato aspermy virus protein 2b Suppression of RNA Silencing|User:Wayne Decatur/Tomato aspermy virus protein 2b Suppression of RNA Silencing]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Lk3 transgenic mice]]
[[Category: Large Structures]]
[[Category: Laronde-Leblanc, N A]]
[[Category: Mus musculus]]
[[Category: Wolberger, C]]
[[Category: Laronde-Leblanc NA]]
[[Category: Homeodomain interaction]]
[[Category: Wolberger C]]
[[Category: Homeodomian]]
[[Category: Hox hexapeptide]]
[[Category: Protein-dna complex]]
[[Category: Tale homeodomain]]
[[Category: Transcription-dna complex]]

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